45918189 has 12 divisors (see below), whose sum is σ = 69210336. Its totient is φ = 29281032.

The previous prime is 45918167. The next prime is 45918199. The reversal of 45918189 is 98181954.

45918189 is a `hidden beast` number, since 459 + 18 + 189 = 666.

It is not a de Polignac number, because 45918189 - 2¹⁷ = 45787117 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45918199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 110707 + ... + 111120.

It is an arithmetic number, because the mean of its divisors is an integer number (5767528).

Almost surely, 2^45918189 is an apocalyptic number.

It is an amenable number.

45918189 is a deficient number, since it is larger than the sum of its proper divisors (23292147).

45918189 is a wasteful number, since it uses less digits than its factorization.

45918189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221856 (or 221853 counting only the distinct ones).

The product of its digits is 103680, while the sum is 45.

The square root of 45918189 is about 6776.2961121840. The cubic root of 45918189 is about 358.0922460290.

The spelling of 45918189 in words is "forty-five million, nine hundred eighteen thousand, one hundred eighty-nine".